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scoundrel [369]
3 years ago
10

1. 3x + y = 11 5x - y = 21

Mathematics
1 answer:
sergeinik [125]3 years ago
4 0

Answer:

[4, -1]

Step-by-step explanation:

Using the Elimination Method:

3x + y = 11

5x - y = 21

__________

8x = 32

__ ___

8 8

x = 4 [Plug this back into both equations to get the y-coordinate of -1]; -1 = y

The <em>y</em>'s are already <em>additive</em><em> </em><em>inverses</em><em> </em>[result in 0], canceling each other out.

I am joyous to assist you anytime.

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6(8f+10g) + 9g - 4(3g+9f)
Karolina [17]

Answer:84f+57g

Step-by-step explanation:

First, multiply everything in parenthesis.

Multiply the 6 by 8f+10g, and the 4 by 3g+9f.

This gets you 48f+60g+9g-12g+36f.

After that, just solve it like normal.

You get 84f+57g.

8 0
1 year ago
Choose a variable to isolate and what it is equal to in the system of equations below
Alinara [238K]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
4. Landon is cooking soup. He has 15 pinan of vegetable broth, 19 pints of milk, and 14 pints of tomato juice. How many gallons
ratelena [41]

Answer:

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Step-by-step explanation:

1) add 15 and 19 to get 34

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3) then divide 48 by 8 to get 6

7 0
3 years ago
How much money will there be in an account at the end of 10 years if $3000 is deposited at 3% interest compounded
BaLLatris [955]

Answer:

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Step-by-step explanation:

A=P(1+(r/n))^nt

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Hope this helped!

6 0
3 years ago
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We know the whole, and the part, but we are trying to find the percent, so we have to divide the two, first turn your whole and part into a decimal.

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8 0
3 years ago
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